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You truly are a rad child. As you go through the increasingly devastating stages of radiation sickness, you will regenerate more and more health.— In-game description

Rad Child is a perk in Fallout: New Vegas.


Upon getting any sort of radiation sickness, health regenerates, the effect becoming more powerful with every threshold reached. However, radiation will continue to build up in the person's system, and can still kill them at the fatal threshold as normal.

The health regeneration kicks in when the Courier gains radiation sickness and becomes more powerful depending on the severity:

  • Minor (200 rads): +2 health per second
  • Advanced (400 rads): +4 health per second
  • Critical (600 rads): +6 health per second
  • Deadly (800 rads): +8 health per second

They will still die on reaching 1000 rads. This perk does not heal limbs.


  • As a point of reference, the Monocyte Breeder implant heals +0.1 health per second, and Solar Powered (with patches) heals +1 health per second. This means that even Minor Radiation Poisoning is twenty times more effective than the implant, and twice as effective as the Solar Powered perk.
  • Some creatures (like glowing ones and golden geckos) have radiation attacks, which can kill a character at the edge of deadly radiation poisoning.
  • Like the monocyte breeder, this perk allows healing while waiting/sleeping. However, because of how much faster Rad Child heals, this perk almost obviates the need for sleep, as waiting one game hour will restore 240 to 960 health. Even just fast traveling can result in a full health bar.
  • This synergizes poorly with Radiation Resistance perks, such as Lead Belly, Implant Y-3 and Rad Resistance, since they reduce the amount of radiation gained, making it more difficult to reach the threshold needed for it to take effect, as well as Rad Absorption, since it periodically flushes radiation from the system.
  • It synergizes extremely well with the Old World Blues perk Atomic!
  • This perk is very beneficial if Dead Money is installed. Since waiting or sleeping in exterior zones to restore health is not possible there, this perk helps with restoring health lost due to Cloud exposure.

See also